package com.example.facadepattern;

public class Projector {

    public void on() {
        System.out.println("投影仪开启");
    }
    public void off() {
        System.out.println("投影仪关闭");
    }
    public void setMode(String mode) {
        System.out.println("投影仪切换到" + mode + "模式");
    }
}
